r0 = socket$inet6_udp(0xa, 0x2, 0x0)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_IPV6_DSTOPTS(r1, 0x29, 0x3b, &(0x7f0000000040), 0x8)
dup2(r0, r1)