Date: Mon, 12 Apr 2021 15:28:16 +0300 From: =?UTF-8?B?w5Z6a2FuIEtJUklL?= <ozkan.kirik@gmail.com> To: Michael Gmelin <freebsd@grem.de> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: jail - vnet bug - ping: UDP connect: No route to host Message-ID: <CAAcX-AGuzUvjTTgPELUYoYhOsoQSmWevmsM=QZr_LnvOZ3yMgA@mail.gmail.com> In-Reply-To: <20210412125222.16610891@bsd64.grem.de> References: <CAAcX-AGd0=Kf-VnwywyHFEM9jUocO%2BZP4LK0XYBijgz-Pd%2BUGg@mail.gmail.com> <20210412125222.16610891@bsd64.grem.de>
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Hello
the output is below:
root@f13:~ # cat /etc/resolv.conf
# Generated by resolvconf
nameserver 8.8.8.8
The jail uses same resolv.conf with host, because path is /
root@f13:~ # jls -N
JID IP Address Hostname Path
client /
root@f13:~ # jexec client ping -6 -c 2 www.google.com
ping: UDP connect: No route to host
root@f13:~ # jexec client truss ping -6 -c 2 www.google.com
mmap(0x0,135168,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) =3D
34362036224 (0x800231000)
mprotect(0x80022e000,4096,PROT_READ) =3D 0 (0x0)
issetugid() =3D 0 (0x0)
sigfastblock(0x1,0x8002304d0) =3D 0 (0x0)
open("/etc/libmap.conf",O_RDONLY|O_CLOEXEC,010575650) =3D 3 (0x3)
fstat(3,{ mode=3D-rw-r--r-- ,inode=3D4807776,size=3D47,blksize=3D32768 }) =
=3D 0 (0x0)
read(3,"# $FreeBSD$\nincludedir /usr/loc"...,47) =3D 47 (0x2f)
close(3) =3D 0 (0x0)
open("/usr/local/etc/libmap.d",O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC,01=
65)
ERR#2 'No such file or directory'
open("/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,010014544) =3D 3 (0x3)
read(3,"Ehnt\^A\0\0\0\M^@\0\0\0G\0\0\0\0"...,128) =3D 128 (0x80)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D3446022,size=3D199,blksize=3D32768 }) =
=3D 0 (0x0)
pread(3,"/lib:/usr/lib:/usr/lib/compat:/u"...,71,0x80) =3D 71 (0x47)
close(3) =3D 0 (0x0)
open("/lib/libm.so.5",O_RDONLY|O_CLOEXEC|O_VERIFY,032266000) =3D 3 (0x3)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727581,size=3D195816,blksize=3D32768 =
}) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,208896,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34362175488 (0x800253000)
mmap(0x800253000,73728,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFA=
ULT_READ,3,0x0)
=3D 34362175488 (0x800253000)
mmap(0x800265000,122880,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCOR=
E|MAP_PREFAULT_READ,3,0x11000)
=3D 34362249216 (0x800265000)
mmap(0x800283000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x2e000)
=3D 34362372096 (0x800283000)
mmap(0x800284000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x2e000)
=3D 34362376192 (0x800284000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
open("/lib/libmd.so.6",O_RDONLY|O_CLOEXEC|O_VERIFY,014232266000) =3D 3 (0x3=
)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727558,size=3D109536,blksize=3D32768 =
}) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,122880,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34362384384 (0x800286000)
mmap(0x800286000,32768,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFA=
ULT_READ,3,0x0)
=3D 34362384384 (0x800286000)
mmap(0x80028e000,77824,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE=
|MAP_PREFAULT_READ,3,0x7000)
=3D 34362417152 (0x80028e000)
mmap(0x8002a1000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x19000)
=3D 34362494976 (0x8002a1000)
mmap(0x8002a3000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x1a000)
=3D 34362503168 (0x8002a3000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
open("/lib/libcasper.so.1",O_RDONLY|O_CLOEXEC|O_VERIFY,00) =3D 3 (0x3)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727576,size=3D23280,blksize=3D32768 }=
) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,36864,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34362507264 (0x8002a4000)
mmap(0x8002a4000,12288,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFA=
ULT_READ,3,0x0)
=3D 34362507264 (0x8002a4000)
mmap(0x8002a7000,12288,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE=
|MAP_PREFAULT_READ,3,0x2000)
=3D 34362519552 (0x8002a7000)
mmap(0x8002aa000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x4000)
=3D 34362531840 (0x8002aa000)
mmap(0x8002ab000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x4000)
=3D 34362535936 (0x8002ab000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
open("/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,00) ERR#2 'No such
file or directory'
open("/usr/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,00) ERR#2 'No
such file or directory'
open("/usr/lib/compat/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,00)
ERR#2 'No such file or directory'
open("/usr/local/lib/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,00) ERR#2
'No such file or directory'
open("/usr/local/lib/compat/pkg/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIF=
Y,00)
ERR#2 'No such file or directory'
open("/lib/casper/libcap_dns.so.2",O_RDONLY|O_CLOEXEC|O_VERIFY,00) =3D 3 (0=
x3)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727640,size=3D17528,blksize=3D32768 }=
) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,28672,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34362544128 (0x8002ad000)
mmap(0x8002ad000,8192,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAU=
LT_READ,3,0x0)
=3D 34362544128 (0x8002ad000)
mmap(0x8002af000,12288,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE=
|MAP_PREFAULT_READ,3,0x1000)
=3D 34362552320 (0x8002af000)
mmap(0x8002b2000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x3000)
=3D 34362564608 (0x8002b2000)
mmap(0x8002b3000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x3000)
=3D 34362568704 (0x8002b3000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
open("/lib/libipsec.so.4",O_RDONLY|O_CLOEXEC|O_VERIFY,00) =3D 3 (0x3)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727575,size=3D31384,blksize=3D32768 }=
) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,45056,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34362572800 (0x8002b4000)
mmap(0x8002b4000,16384,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFA=
ULT_READ,3,0x0)
=3D 34362572800 (0x8002b4000)
mmap(0x8002b8000,16384,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE=
|MAP_PREFAULT_READ,3,0x3000)
=3D 34362589184 (0x8002b8000)
mmap(0x8002bc000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x6000)
=3D 34362605568 (0x8002bc000)
mmap(0x8002bd000,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x6000)
=3D 34362609664 (0x8002bd000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
open("/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) =3D 3 (0x3)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727578,size=3D1981952,blksize=3D32768=
}) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,4263936,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34362617856 (0x8002bf000)
mmap(0x8002bf000,540672,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREF=
AULT_READ,3,0x0)
=3D 34362617856 (0x8002bf000)
mmap(0x800343000,1384448,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCO=
RE|MAP_PREFAULT_READ,3,0x83000)
=3D 34363158528 (0x800343000)
mmap(0x800495000,40960,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFA=
ULT_READ,3,0x1d4000)
=3D 34364542976 (0x800495000)
mmap(0x80049f000,28672,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFA=
ULT_READ,3,0x1dd000)
=3D 34364583936 (0x80049f000)
mmap(0x8004a6000,2269184,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANO=
N,-1,0x0)
=3D 34364612608 (0x8004a6000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
open("/lib/libnv.so.0",O_RDONLY|O_CLOEXEC|O_VERIFY,00) =3D 3 (0x3)
fstat(3,{ mode=3D-r--r--r-- ,inode=3D4727585,size=3D91728,blksize=3D32768 }=
) =3D 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) =3D 3436217139=
2
(0x800252000)
mmap(0x0,102400,PROT_NONE,MAP_GUARD,-1,0x0) =3D 34366881792 (0x8006d0000)
mmap(0x8006d0000,40960,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFA=
ULT_READ,3,0x0)
=3D 34366881792 (0x8006d0000)
mmap(0x8006da000,53248,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE=
|MAP_PREFAULT_READ,3,0x9000)
=3D 34366922752 (0x8006da000)
mmap(0x8006e7000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x15000)
=3D 34366976000 (0x8006e7000)
mmap(0x8006e8000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAU=
LT_READ,3,0x15000)
=3D 34366980096 (0x8006e8000)
munmap(0x800252000,4096) =3D 0 (0x0)
close(3) =3D 0 (0x0)
mprotect(0x800283000,4096,PROT_READ) =3D 0 (0x0)
mprotect(0x8002a1000,4096,PROT_READ) =3D 0 (0x0)
mprotect(0x8002aa000,4096,PROT_READ) =3D 0 (0x0)
mprotect(0x8002b2000,4096,PROT_READ) =3D 0 (0x0)
mprotect(0x8002bc000,4096,PROT_READ) =3D 0 (0x0)
mprotect(0x800495000,40960,PROT_READ) =3D 0 (0x0)
mprotect(0x8006e7000,4096,PROT_READ) =3D 0 (0x0)
mprotect(0x800495000,40960,PROT_READ|PROT_WRITE) =3D 0 (0x0)
mprotect(0x800495000,40960,PROT_READ) =3D 0 (0x0)
readlink("/etc/malloc.conf",0x7fffffffd600,1024) ERR#2 'No such file or
directory'
issetugid() =3D 0 (0x0)
__sysctl("vm.overcommit",2,0x7fffffffbb94,0x7fffffffbb88,0x0,0) =3D 0 (0x0)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),=
-1,0x0)
=3D 34368126976 (0x800800000)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(12),=
-1,0x0)
=3D 34370224128 (0x800a00000)
mmap(0x0,4194304,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),=
-1,0x0)
=3D 34372321280 (0x800c00000)
mprotect(0x210000,4096,PROT_READ) =3D 0 (0x0)
socketpair(0x1,0x20000001,0x0,0x7fffffffba98) =3D 0 (0x0)
pdfork(0x7fffffffba94,0x0) =3D 1477 (0x5c5)
close(4) =3D 0 (0x0)
fcntl(3,F_GETFL,) =3D 6 (0x6)
fcntl(5,F_GETFL,) =3D 2 (0x2)
select(4,0x0,{ 3 },0x0,0x0) =3D 1 (0x1)
sendto(3,"l\0\0\0\0\0\0\0\0\0\0B\0\0\0\0\0"...,85,0,NULL,0) =3D 85 (0x55)
select(4,{ 3 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(3,"l\0\0\^A\0\0\0\0\0\0\0h\0\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x13=
)
select(4,{ 3 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(3,"\^F\a\0\b\0\0\0\0\0\0\0\0\0\0\0"...,104,0,NULL,0x0) =3D 104 (0x=
68)
select(4,{ 3 },0x0,0x0,0x0) =3D 1 (0x1)
recvmsg(3,{NULL,0,[{"\0",1}],1,{{level=3DSOL_SOCKET,type=3DSCM_RIGHTS,data=
=3D{0x04,0x00,0x00,0x00}}},24,0x40000},0x40000)
=3D 1 (0x1)
fcntl(4,F_GETFL,) =3D 6 (0x6)
close(5) =3D 0 (0x0)
close(3) =3D 0 (0x0)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0!\0\0\0\0\0"...,52,0,NULL,0) =3D 52 (0x34)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0;\0\0\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x1=
3)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^A\a\0\0\0\0\0\0\0\0\0\0\0\0\0"...,59,0,NULL,0x0) =3D 59 (0x3b=
)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0\M-(\0\0\0"...,187,0,NULL,0) =3D 187 (0xbb)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0!\0\0\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x1=
3)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^C\^F\0\b\0\0\0\0\0\0\0\0\0\0\0"...,33,0,NULL,0x0) =3D 33 (0x2=
1)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0!\0\0\0\0\0"...,52,0,NULL,0) =3D 52 (0x34)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0\M-(\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x13=
)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^E\a\0z\0\0\0\0\0\0\0\0\0\0\0\0"...,168,0,NULL,0x0) =3D 168
(0xa8)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0\M-K\0\0\0"...,222,0,NULL,0) =3D 222 (0xde)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0!\0\0\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x1=
3)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^C\^F\0\b\0\0\0\0\0\0\0\0\0\0\0"...,33,0,NULL,0x0) =3D 33 (0x2=
1)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0\M-}\0\0\0"...,272,0,NULL,0) =3D 272 (0x110)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0]\^A\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x13=
)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^E\^E\0001\^A\0\0\0\0\0\0\0\0\0"...,349,0,NULL,0x0) =3D 349
(0x15d)
socket(PF_INET6,SOCK_RAW,IPPROTO_ICMPV6) =3D 3 (0x3)
socket(PF_INET6,SOCK_RAW,IPPROTO_ICMPV6) =3D 5 (0x5)
getuid() =3D 0 (0x0)
seteuid(0x0) =3D 0 (0x0)
getuid() =3D 0 (0x0)
setuid(0x0) =3D 0 (0x0)
getpid() =3D 1476 (0x5c4)
mmap(0x0,1112,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) =3D
34362171392 (0x800252000)
minherit(0x800252000,1112,INHERIT_ZERO) =3D 0 (0x0)
getrandom("m\M^X\^U\M-I\M^XP\M-e^\M-R\^UE"...,40,0) =3D 40 (0x28)
setsockopt(3,IPPROTO_IPV6,IPV6_USE_MIN_MTU,0x7fffffffe944,4) =3D 0 (0x0)
setsockopt(5,IPPROTO_ICMPV6,18,0x7fffffffbad0,32) =3D 0 (0x0)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0!\0\0\0\0\0"...,52,0,NULL,0) =3D 52 (0x34)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0\M-K\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x13=
)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^E\a\0\M^]\0\0\0\0\0\0\0\0\0\0"...,203,0,NULL,0x0) =3D 203 (0x=
cb)
select(5,0x0,{ 4 },0x0,0x0) =3D 1 (0x1)
sendto(4,"l\0\0\0\0\0\0\0\0\0\0\M-(\0\0\0"...,187,0,NULL,0) =3D 187 (0xbb)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"l\0\0\0\0\0\0\0\0\0\0!\0\0\0\0\0"...,19,0,NULL,0x0) =3D 19 (0x1=
3)
select(5,{ 4 },0x0,0x0,0x0) =3D 1 (0x1)
recvfrom(4,"\^C\^F\0\b\0\0\0\0\0\0\0\0\0\0\0"...,33,0,NULL,0x0) =3D 33 (0x2=
1)
socket(PF_INET6,SOCK_DGRAM,0) =3D 6 (0x6)
connect(6,{ AF_INET6 [2a00:1450:4006:802::2004]:10101 },28) ERR#65 'No
route to host'
ping: write(2,"ping: ",6) =3D 6 (0x6)
UDP connectwrite(2,"UDP connect",11) =3D 11 (0xb)
: write(2,": ",2) =3D 2 (0x2)
fstatat(AT_FDCWD,"/usr/share/nls/C/libc.cat",0x7fffffffb7f0,0x0) ERR#2 'No
such file or directory'
fstatat(AT_FDCWD,"/usr/share/nls/libc/C",0x7fffffffb7f0,0x0) ERR#2 'No such
file or directory'
fstatat(AT_FDCWD,"/usr/local/share/nls/C/libc.cat",0x7fffffffb7f0,0x0)
ERR#2 'No such file or directory'
fstatat(AT_FDCWD,"/usr/local/share/nls/libc/C",0x7fffffffb7f0,0x0) ERR#2
'No such file or directory'
No route to host
write(2,"No route to host\n",17) =3D 17 (0x11)
exit(0x1)
process exit, rval =3D 1
On Mon, Apr 12, 2021 at 1:53 PM Michael Gmelin <freebsd@grem.de> wrote:
>
>
> On Sun, 11 Apr 2021 07:42:23 +0300
> =C3=96zkan KIRIK <ozkan.kirik@gmail.com> wrote:
>
> > Hello,
> >
> >
> > root@f13:~ # jexec client ping www.google.com
> > ping: UDP connect: No route to host
> >
> > root@f13:~ # jexec client ping -4 -c 2 www.google.com
> > PING www.google.com (216.58.212.100): 56 data bytes
> > 64 bytes from 216.58.212.100: icmp_seq=3D0 ttl=3D128 time=3D85.487 ms
> > 64 bytes from 216.58.212.100: icmp_seq=3D1 ttl=3D128 time=3D90.243 ms
> >
> > --- www.google.com ping statistics ---
> > 2 packets transmitted, 2 packets received, 0.0% packet loss
> > round-trip min/avg/max/stddev =3D 85.487/87.865/90.243/2.378 ms
> > root@f13:~ #
>
> That's interesting - ping6 was merged into ping last year, the basic
> logic of deciding which AF to use is here:
>
> https://cgit.freebsd.org/src/tree/sbin/ping/main.c#n128
>
> Essentially it does:
>
> 1. IPv6 disabled? Use IPv4
> else
> 2. IPv4 disabled? Use IPv6
> else
> 3. do hostname lookup and decide based on the AF of the first result.
>
> As far as I can tell, the result of 3. is not used for the ping though,
> but only to decide if ping6 or ping should be done. I wonder if this is
> actually a good idea - gut feeling-wise I would prefer only one lookup
> to take place when calling ping.
>
> That said, what happens if you call:
>
> jexec client ping -6 -c 2 www.google.com
>
> I assume that should give you some output (including an IP address),
> even though the ping6 itself will fail.
>
> Also, what is your /etc/resolv.conf inside the jail?
>
> I suspect that the problem is caused by the gethostbyaddr call in 3.
> and is not directly IPv6 related - if I compare the code used by ping.c
> and ping6.c (including capsicum support) with what 3. does, we might
> have a bigger problem here.
>
> Best,
> Michael
>
> > _______________________________________________
> > freebsd-net@freebsd.org mailing list
> > https://lists.freebsd.org/mailman/listinfo/freebsd-net
> > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>
>
>
> --
> Michael Gmelin
>
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