tst_getprotobyname - Get the new IPv6 protocols as a protoent structure from the protocol name
Check whether the common names which are required for the new IPv6 protocols is defined in file /etc/protocols.
./tst_getprotobyname [-tooloption ...] -tooloption : v6api tool option
1. Check the define of hop-by-hop options for ipv6, should return protocol number as 0 2. Check the define of ipv6 protocol, should return protocol number as 41 3. Check the define of routing header for ipv6, should return protocol number as 43 4. Check the define of fragment header for ipv6, should return protocol number as 44 5. Check the define of encapsulating security payload for ipv6, should return protocol number as 50 6. Check the define of authentication header for ipv6, should return protocol number as 51 7. Check the define of icmp for ipv6, should return protocol number as 58 8. Check the define of no next header for ipv6, should return protocol number as 59 9. Check the define of destination options for ipv6, should return protocol number as 60
None
RFC 3542
2.4. Protocols File
Many hosts provide the file /etc/protocols that contains the names of the various IP protocols and their protocol number (e.g., the value of the protocol field in the IPv4 header for that protocol, such as 1 for ICMP). Some programs then call the function getprotobyname() to obtain the protocol value that is then specified as the third argument to the socket() function. For example, the Ping program contains code of the form
struct protoent *proto;
proto = getprotobyname("icmp");
s = socket(AF_INET, SOCK_RAW, proto->p_proto);
Common names are required for the new IPv6 protocols in this file, to provide portability of applications that call the getprotoXXX() functions.
We define the following protocol names with the values shown. These are taken under http://www.iana.org/numbers.html.
hopopt 0 # hop-by-hop options for ipv6 ipv6 41 # ipv6 ipv6-route 43 # routing header for ipv6 ipv6-frag 44 # fragment header for ipv6 esp 50 # encapsulating security payload for ipv6 ah 51 # authentication header for ipv6 ipv6-icmp 58 # icmp for ipv6 ipv6-nonxt 59 # no next header for ipv6 ipv6-opts 60 # destination options for ipv6