ABNF for SDP — Addressing

IP4‑address /  IP6‑address /  FQDN /  extn‑addr

IP4‑multicast /  IP6‑multicast /  FQDN /  extn‑addr

b1  3( "."  decimal‑uchar )

decimal‑uchar     ; less than "224"

6( h16  ":" )  ls32  /
"::"  5( h16  ":" )  ls32  /
[ h16 ]  "::"  4( h16  ":" )  ls32  /
[ *1( h16  ":" )  h16 ]  "::"  3( h16  ":" )  ls32  /
[ *2( h16  ":" )  h16 ]  "::"  2( h16  ":" )  ls32  /
[ *3( h16  ":" )  h16 ]  "::"  h16  ":"    ls32  /
[ *4( h16  ":" )  h16 ]  "::"  ls32  /
[ *5( h16  ":" )  h16 ]  "::"  h16  /
[ *6( h16  ":" )  h16 ]  "::"

1*4HEXDIG

( h16   ":"   h16 ) /  IP4‑address

m1  3( "."  decimal‑uchar )  "/"  ttl  [ "/"  integer ]
;  224.0.0.0 to 239.255.255.255

( "22"  ( "4" /  "5" /  "6" /  "7" /  "8" /  "9" ) ) /  ( "23"  DIGIT )

( POS‑DIGIT  *2DIGIT ) /  "0"

IP6‑address  [ "/"  integer ]

4*( alpha‑numeric /  "-" /  "." )
;  fully qualified domain name as specified in and updates

non‑ws‑string
;  Generic for other address families