r0 = socket$inet6_udp(0xa, 0x2, 0x0) setsockopt$inet6_opts(r0, 0x29, 0x37, &(0x7f0000000140)=@routing, 0x8) getsockopt$inet6_opts(r0, 0x29, 0x37, &(0x7f0000000040)=""/247, &(0x7f0000000180)=0xf7)