What were you trying to do that didn't work?

"If at least two domains, each consisting of multiple labels, are sourced from /etc/resolv.conf, the DHCPv6 server gets the encoding of Option 24 wrong: we get a spurious byte instead of the 0x00 separator before the next domain name."

Please provide the package NVR for which bug is seen:

passt-0^20230818.g0af928e-4.el9.s390x

How reproducible:

100%

Steps to reproduce

1. Host with two interfaces
2. Set up passt interface on second interface 

       <interface type='user'>
         <mac address='52:54:00:c2:b9:67'/>
         <source dev='enc2'/>
         <ip address='172.17.2.4' family='ipv4' prefix='24'/>
         <ip address='2001:db8:ac10:fd01::20' family='ipv6'/>
         <portForward proto='tcp'>
           <range start='31339' to='41339'/>
         </portForward>
         <portForward proto='udp'>
           <range start='2025'/>
         </portForward>
         <portForward proto='tcp' address='192.168.126.48'>
           <range start='9000'/>
         </portForward>
         <model type='virtio'/>
         <backend type='passt'/>
         <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/>
       </interface> 

1. Start VM and check /etc/resolv.conf in it

Expected results

A 'search' line with several hosts listed, separated by space

Actual results

Some hosts are separated by ".\003"

Upstream bug: https://bugs.passt.top/show_bug.cgi?id=75