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Date: Thu, 13 Mar 2014 19:36:22 GMT
From: Alan Somers <asomers@freebsd.org>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: bin/187551: ifconfig should change its process fib when configuring
an interface with nondefault fib
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>Number: 187551
>Category: bin
>Synopsis: ifconfig should change its process fib when configuring an interface with nondefault fib
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Mar 13 19:40:01 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator: Alan Somers
>Release: 11.0-CURRENT r262867
>Organization:
Spectra Logic
>Environment:
FreeBSD alans-fbsd-head 11.0-CURRENT FreeBSD 11.0-CURRENT #39 r263109M: Thu Mar 13 11:31:56 MDT 2014 alans@ns1.eng.sldomain.com:/vmpool/obj/usr/home/alans/freebsd/head/sys/GENERIC amd64
>Description:
When configuring an interface with a nondefault fib, ifconfig(8) should changes its process fib to match the interface fib. If it does not, and the user does not think to, then the new interface's subnet route will appear in FIB 0. Note that this only matters when net.add_addr_allfibs=0
>How-To-Repeat:
# ifconfig tap0 create
# ifconfig tap0 192.0.2.2/24 fib 2
# setfib 2 netstat -rn -f inet
Routing tables (fib: 2)
# setfib 0 netstat -rn -f inet
Routing tables
Internet:
Destination Gateway Flags Netif Expire
default 10.1.0.1 UGS em0
10.1.0.0/20 link#1 U em0
10.1.3.220 link#1 UHS lo0
127.0.0.1 link#2 UH lo0
192.0.2.0/24 link#3 U tap0
192.0.2.2 link#3 UHS lo0
>Fix:
==== //SpectraBSD/stable/sbin/ifconfig/iffib.c#2 (text) ====
@@ -76,6 +76,8 @@
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_fib = fib;
+ if (setfib(fib) != 0)
+ warn("setfib");
if (ioctl(s, SIOCSIFFIB, (caddr_t)&ifr) < 0)
warn("ioctl (SIOCSIFFIB)");
}
>Release-Note:
>Audit-Trail:
>Unformatted: