Date: Fri, 26 Sep 2014 20:45:13 +0200 From: Jeremy Boy <mail@jboy.eu> To: freebsd-questions@freebsd.org Cc: Jeremy Boy <mail@jboy.eu> Subject: Limited Broadcast in FreeBSD 10.0-STABLE Message-ID: <2A4CDD79-163F-4DCB-AE42-9A614006FD76@jboy.eu>
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Hello everybody, it seems to me that limited broadcast is broken on FreeBSD 10.0-STABLE. My setup: FreeBSD server (FreeBSD server.home.local 10.0-STABLE FreeBSD 10.0-STABLE #0 r264752: Tue Apr 22 22:09:47 CEST 2014 jb@server.home.local:/usr/obj/usr/src10/sys/GENERIC amd64) MacBook Pro (Darwin jb-mbp.local 13.3.0 Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64 x86_64) Both are connected over Ethernet on the same layer 2 switch. > root@server: $ ping -c 4 255.255.255.255 > PING 255.255.255.255 (255.255.255.255): 56 data bytes > 64 bytes from 255.255.255.255: icmp_seq=0 ttl=64 time=0.364 ms > 64 bytes from 255.255.255.255: icmp_seq=1 ttl=64 time=0.357 ms > 64 bytes from 255.255.255.255: icmp_seq=2 ttl=64 time=0.373 ms > 64 bytes from 255.255.255.255: icmp_seq=3 ttl=64 time=0.373 ms > > --- 255.255.255.255 ping statistics --- > 4 packets transmitted, 4 packets received, 0.0% packet loss > round-trip min/avg/max/stddev = 0.357/0.367/0.373/0.007 ms > root@jb-mbp: $ tcpdump -i en0 -nX icmp > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode > listening on en0, link-type EN10MB (Ethernet), capture size 65535 bytes > ^C > 0 packets captured > 1532 packets received by filter > 0 packets dropped by kernel The other way around, it works: > root@jb-mbp: $ ping -c 4 255.255.255.255 > PING 255.255.255.255 (255.255.255.255): 56 data bytes > 64 bytes from 192.168.2.116: icmp_seq=0 ttl=64 time=0.124 ms > 64 bytes from 255.255.255.255: icmp_seq=0 ttl=64 time=0.574 ms > 64 bytes from 192.168.2.116: icmp_seq=1 ttl=64 time=0.078 ms > 64 bytes from 255.255.255.255: icmp_seq=1 ttl=64 time=0.498 ms > 64 bytes from 192.168.2.116: icmp_seq=2 ttl=64 time=0.208 ms > 64 bytes from 255.255.255.255: icmp_seq=2 ttl=64 time=0.620 ms > 64 bytes from 192.168.2.116: icmp_seq=3 ttl=64 time=0.234 ms > > --- 255.255.255.255 ping statistics --- > 4 packets transmitted, 4 packets received, +3 duplicates, 0.0% packet loss > round-trip min/avg/max/stddev = 0.078/0.334/0.620/0.208 ms > root@server: $ sudo tcpdump -i em0 -nX icmp > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode > listening on em0, link-type EN10MB (Ethernet), capture size 65535 bytes > capability mode sandbox enabled > 20:37:09.652662 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 0, length 64 > 0x0000: 4500 0054 ed57 0000 4001 ca35 c0a8 0274 E..T.W..@..5...t > 0x0010: ffff ffff 0800 4128 0aad 0000 5425 b255 ......A(....T%.U > 0x0020: 0009 baa3 0809 0a0b 0c0d 0e0f 1011 1213 ................ > 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"# > 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123 > 0x0050: 3435 3637 4567 > 20:37:10.653462 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 1, length 64 > 0x0000: 4500 0054 e265 0000 4001 d527 c0a8 0274 E..T.e..@..'...t > 0x0010: ffff ffff 0800 3dd8 0aad 0001 5425 b256 ......=.....T%.V > 0x0020: 0009 bdf1 0809 0a0b 0c0d 0e0f 1011 1213 ................ > 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"# > 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123 > 0x0050: 3435 3637 4567 > 20:37:11.654650 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 2, length 64 > 0x0000: 4500 0054 195b 0000 4001 9e32 c0a8 0274 E..T.[..@..2...t > 0x0010: ffff ffff 0800 3990 0aad 0002 5425 b257 ......9.....T%.W > 0x0020: 0009 c237 0809 0a0b 0c0d 0e0f 1011 1213 ...7............ > 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"# > 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123 > 0x0050: 3435 3637 4567 > 20:37:12.655765 IP 192.168.2.116 > 255.255.255.255: ICMP echo request, id 2733, seq 3, length 64 > 0x0000: 4500 0054 20b1 0000 4001 96dc c0a8 0274 E..T....@......t > 0x0010: ffff ffff 0800 350c 0aad 0003 5425 b258 ......5.....T%.X > 0x0020: 0009 c6b9 0809 0a0b 0c0d 0e0f 1011 1213 ................ > 0x0030: 1415 1617 1819 1a1b 1c1d 1e1f 2021 2223 .............!"# > 0x0040: 2425 2627 2829 2a2b 2c2d 2e2f 3031 3233 $%&'()*+,-./0123 > 0x0050: 3435 3637 4567 > ^C > 4 packets captured > 650 packets received by filter > 0 packets dropped by kernel I've tried this with several FreeBSD (all 10-STABLE) machines, none worked. Who and what is wrong? > root@server: $ ifconfig > em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000 > options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO> > ether 00:22:4d:ac:d4:14 > inet 192.168.2.90 netmask 0xffffff00 broadcast 192.168.2.255 > inet6 fe80::222:4dff:feac:d414%em0 prefixlen 64 scopeid 0x1 > inet 192.168.2.91 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.92 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.93 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.94 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.95 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.96 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.97 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.98 netmask 0xffffff00 broadcast 192.168.2.255 > inet 192.168.2.99 netmask 0xffffff00 broadcast 192.168.2.255 > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > media: Ethernet 1000baseT <full-duplex> > status: active > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 > options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6> > inet6 ::1 prefixlen 128 > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 > inet 127.0.0.1 netmask 0xff000000 > nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> > tun0: flags=8010<POINTOPOINT,MULTICAST> metric 0 mtu 1500 > options=80000<LINKSTATE> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> > Opened by PID 1092 > pflog0: flags=141<UP,RUNNING,PROMISC> metric 0 mtu 33160 > root@server: $ route get 255.255.255.255 > route to: 255.255.255.255 > destination: default > mask: default > gateway: easy.box > fib: 0 > interface: em0 > flags: <UP,GATEWAY,DONE,STATIC> > recvpipe sendpipe ssthresh rtt,msec mtu weight expire > 0 0 0 0 9000 1 0 Thanks in advance!
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