r0 = signalfd4(0xffffffffffffffff, &(0x7f0000000180), 0x8, 0x0)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
sendto$inet6(r1, &(0x7f0000000100)='{', 0xfff7, 0x9f61, &(0x7f0000000040)={0xa, 0x4e24, 0x0, @mcast2}, 0x1c)
dup2(r0, r1)