As written in the RFC 791 this option is useful to record the addresses of the routers that an ip datagram goes through.
I'm sending an ip datagram with an ICMP echo message, i've set the option type (of the header ip) on 7, the option length on 7 and the pointer on 4.
I expect an echo reply with the first router address to come back, but this doesn't happends. Am i doing something wrong or the option is not supported anymore?(If i don't set the options, the echo response comes back as expect)