r0 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x21, &(0x7f0000000000)=0x3, 0x4)
sendmmsg$inet6(r0, &(0x7f00000038c0)=[{{&(0x7f0000000040)={0xa, 0x4e24, 0x9, @local}, 0x1c, 0x0}}], 0x1, 0x0)