r0 = socket$inet6_udp(0xa, 0x2, 0x0)
openat$procfs(0xffffffffffffff9c, 0x0, 0x0, 0x0)
sendmmsg$inet6(r0, &(0x7f0000003580)=[{{&(0x7f00000000c0)={0xa, 0x4e20, 0x0, @remote}, 0x1c, 0x0}}, {{&(0x7f0000000880)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @loopback}}, 0x1c, 0x0}}], 0x2, 0x8040)