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Subject: [Bug 252883] [net][route][loopback] lo1 IP is not added tp routing
table of cloned interface via rc.d at startup
Date: Thu, 21 Jan 2021 13:06:19 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D252883
Bug ID: 252883
Summary: [net][route][loopback] lo1 IP is not added tp routing
table of cloned interface via rc.d at startup
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: bugs@FreeBSD.org
Reporter: dch@freebsd.org
IP routes for loopback cloned interfaces shouldn't need
to have a static route manually added. Regression is
probably present for several weeks, I think.
# ping 100.64.0.1
PING 100.64.0.1 (100.64.0.1): 56 data bytes
^C
# netstat -4rn
Routing tables
Internet:
Destination Gateway Flags Netif Expire
default 172.16.1.1 UGS igb0
127.0.0.1 link#3 UHS lo0
172.16.1.0/24 link#1 U igb0
172.16.1.4 link#1 UHS lo0
### the following is missing, then the above now works
# route add 100.64.0.1/28 100.64.0.1
uname 13.0-ALPHA1 main-c256063-g098c902b5202 (~ 2021-01-18)
To reproduce:
default install, add these to /etc/rc.conf, reboot or /etc/netstart.=20
Issue is also present with a more typical RFC1918 range, I tested with
192.168.0.1 as well.
# /etc/rc.conf
cloned_interfaces=3D"${cloned_interfaces} lo1"
ifconfig_lo1=3D"inet 100.64.0.1/28"
ifconfig_lo1_aliases=3D"inet 100.64.0.2-15/32"
# ifconfig lo1
lo1: flags=3D8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3D680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 fe80::1%lo1 prefixlen 64 scopeid 0x4
inet 100.64.0.1 netmask 0xfffffff0
inet 100.64.0.2 netmask 0xffffffff
...
inet 100.64.0.15 netmask 0xffffffff
groups: lo
nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
# route -nv get 100.64.0.1
RTA_DST: inet 100.64.0.1; RTA_IFP: link ; RTM_GET: Report Metrics: len 224,
pid: 0, seq 1, errno 0, flags:<UP,GATEWAY,HOST,STATIC>
locks: inits:=20
sockaddrs: <DST,IFP>
100.64.0.1 link#0
route to: 100.64.0.1
destination: 0.0.0.0
mask: 0.0.0.0
gateway: 172.16.1.1
fib: 0
interface: igb0
flags: <UP,GATEWAY,DONE,STATIC>
recvpipe sendpipe ssthresh rtt,msec mtu weight expire
0 0 0 0 1500 1 0=20
locks: inits:=20
sockaddrs: <DST,GATEWAY,NETMASK,IFP,IFA>
0.0.0.0 172.16.1.1 0.0.0.0 igb0:ac.1f.6b.67.e1.38 172.16.1.4
--=20
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