r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @local}}, 0x1c)
getsockopt$inet6_buf(r0, 0x29, 0x3d, &(0x7f0000005c00)=""/196, &(0x7f0000000900)=0xc4)