UDP connections in muvm (libkrun based VMM using passt) are broken with passt-0^20250415.g2340bbf-1.fc42, This is a regression from passt-0^2025_03_20.32f6212-1.

passt logs "Flow 0 (UDP flow): Unable to determine local address: Permission denied" which coincides with following SELinux audit message:

| type=AVC msg=audit(1746083799.606:235): avc:  denied  { getattr } for
|   pid=2961 comm="passt" laddr=127.0.0.1 lport=49221
|   faddr=127.0.0.53 fport=53
|   scontext=unconfined_u:unconfined_r:passt_t:s0-s0:c0.c1023
|   tcontext=unconfined_u:unconfined_r:passt_t:s0-s0:c0.c1023
|   tclass=udp_socket permissive=0

passt added commit 59cc89f ("udp, udp_flow: Track our specific address on socket interfaces") a getsockname() call requring getattr

I'll send a patch adding getattr for udp_sockets once upstreams maling list acts on my subscription request. I'll attach the patch to this ticket as well.


Reproducible: Always

Steps to Reproduce:
1. install muvm
2. muvm -- nslockup bugzilla.redhat.com
Actual Results:
Flow 0 (UDP flow): Unable to determine local address: Permission denied
and no address resolution

Expected Results:
No IPv6 nameserver available for NDP/DHCPv6
Using default interface naming scheme 'v257'.
Server:         10.7.23.1
Address:        10.7.23.1#53

Non-authoritative answer:
bugzilla.redhat.com     canonical name = bugzilla.redhat.com.edgekey.net.
bugzilla.redhat.com.edgekey.net canonical name = e40028.dsca.akamaiedge.net.
Name:   e40028.dsca.akamaiedge.net
Address: 2.21.133.170
Name:   e40028.dsca.akamaiedge.net
Address: 2.21.133.160
Name:   e40028.dsca.akamaiedge.net
Address: 2a02:26f0:300::215:85a0
Name:   e40028.dsca.akamaiedge.net
Address: 2a02:26f0:300::215:85aa