$ ip -d a show tunsnx
25: tunsnx: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1200 qdisc fq_codel state UNKNOWN group default qlen 100
    link/none  promiscuity 0 minmtu 68 maxmtu 65535
    tun type tun pi off vnet_hdr off persist off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
    inet XXX.XXX.XXX.XXX peer XXX.XXX.XXX.YYY/32 scope 247 tunsnx
       valid_lft forever preferred_lft forever