r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
capset(&(0x7f0000000000)={0x20080522}, &(0x7f0000000040))
r1 = dup2(r0, r0)
setsockopt$inet6_tcp_TCP_CONGESTION(r1, 0x6, 0xd, &(0x7f00000000c0)='reno\x00', 0x5)