kern/126493: Established connections from other IP's appear in jail's netstat output

Vedad KAJTAZ vedad at kajtaz.net
Wed Aug 13 07:10:09 UTC 2008


>Number:         126493
>Category:       kern
>Synopsis:       Established connections from other IP's appear in jail's netstat output
>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:   Wed Aug 13 07:10:09 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Vedad KAJTAZ
>Release:        7.0-RELEASE-p2
>Organization:
>Environment:
FreeBSD ike.osilex.net 7.0-RELEASE-p2 FreeBSD 7.0-RELEASE-p2 #0: Wed Jun 18 07:33:20 UTC 2008     root at i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
A jail running with IP1 can sometimes see established connections between IP2 (used by an other jail) and a remote host, in it's netstat output.

In my case:

wendy.osilex.net is a jail that was assigned IP 87.98.200.163
ike.osilex.net is a jail that was assigned IP 87.98.200.164

[root at ike /]$ netstat -n
netstat: kvm not available: /dev/mem: No such file or directory
Active Internet connections
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp4       0      0  87.98.200.163.25       85.237.44.155.4245     SYN_RCVD


>How-To-Repeat:
Don't know
>Fix:
Don't know

>Release-Note:
>Audit-Trail:
>Unformatted:


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