Bug 247572

Summary:	/usr/share/examples/jails jib & jng NOT working
Product:	Base System	Reporter:	joeb1
Component:	misc	Assignee:	freebsd-jail (Nobody) <jail>
Status:	New ---
Severity:	Affects Some People	CC:	dteske, lwhsu
Priority:	---
Version:	12.1-RELEASE
Hardware:	Any
OS:	Any

Description joeb1 2020-06-27 02:58:47 UTC

After starting vnet jail using jail.conf as shown in /usr/share/examples/jails to use jng and logging in to the jail and issue
ping -c 2 1.1.1.1  receive following message 
ping: sendto: Network is unreachable


After starting vnet jail using jail.conf as shown in /usr/share/examples/jails to use jib and logging in to the jail and issue
ping -c 2 1.1.1.1  

got 100% packet loss.

Running on real hardware fbsd 12.1

The /usr/share/examples/jails contains examples of using rc.conf to define jails which is obsolete since fbsd release 10.0 and should be removed.

Comment 1 Devin Teske freebsd_committer

2020-12-11 17:38:48 UTC

Thanks for reporting. I will have a look to see what has changed with respect to ICMP packets in a vnet jail. I bet some sysctl has to be twisted or something.

ASIDE: rc.conf based jails are not going anywhere, to my knowledge, as jail.conf based jails cannot be managed as easily (whereas rc.conf jails can easily be managed in a site using sysrc).