v3.0 tuntap crash

[coneill746]

Running in a docker container using an image which has been built from RHEL 8.10

Supernode starts with no issue

[root@kxsa n2n]# sudo supernode -p 1200 -f
10/Feb/2025 13:29:04 [supernode.c:588] WARNING: using default federation name; FOR TESTING ONLY, usage of a custom federation name (-F) is highly recommended!
10/Feb/2025 13:29:04 [sn_utils.c:136] calculated shared secrets for edge authentication
10/Feb/2025 13:29:04 [supernode.c:604] supernode is listening on UDP 1200 (main)
10/Feb/2025 13:29:04 [supernode.c:613] supernode opened TCP 1200 (aux)
10/Feb/2025 13:29:04 [supernode.c:620] supernode is listening on TCP 1200 (aux)
10/Feb/2025 13:29:04 [supernode.c:629] supernode is listening on UDP 5645 (management)
10/Feb/2025 13:29:04 [supernode.c:641] dropping privileges to uid=997, gid=992
10/Feb/2025 13:29:04 [sn_utils.c:807] successfully created resolver thread
10/Feb/2025 13:29:04 [supernode.c:659] supernode started

Edge service crashes

[root@kxsa n2n]# sudo edge -c mynetwork -a 173.245.239.3 -l 173.245.239.3:1200
10/Feb/2025 14:46:31 [edge_utils.c:3774] adding supernode = 173.245.239.3:1200
10/Feb/2025 14:46:31 [edge.c:1085] starting n2n edge 3.0.0 Oct 27 2021 19:04:56
10/Feb/2025 14:46:31 [edge.c:1091] using compression: none.
10/Feb/2025 14:46:31 [edge.c:1092] using null cipher.
10/Feb/2025 14:46:31 [edge_utils.c:392] number of supernodes in the list: 1
10/Feb/2025 14:46:31 [edge_utils.c:394] supernode 0 => 173.245.239.3:1200
10/Feb/2025 14:46:31 [edge_utils.c:467] WARNING: encryption is disabled in edge
10/Feb/2025 14:46:31 [edge_utils.c:483] successfully created resolver thread
10/Feb/2025 14:46:31 [edge.c:1116] use manually set IP address
10/Feb/2025 14:46:31 [tuntap_linux.c:136] ERROR: tuntap ioctl(TUNSETIFF, IFF_TAP) error: Operation not permitted[-1]

Any suggestions about what is going wrong?

[coneill746]

I think I may have to mount the tunnel device (/dev/net/tun) within the container to get this to work.

Not seeing this problem when I try to run this outside of the container.