Hello,
During recent services(5)-related threads, I glanced over the file
and noticed a duplicate - namely(sic!), "nameserver" is being used
both as the a service name, as well as an alias for "domain".
nameserver 42/tcp name # IEN 116
domain 53/tcp nameserver # name-domain server
domain 53/udp nameserver
The above entries had remained unchanged since the file has been
imported into the tree[0]. As I found out some minutes later, NetBSD
have removed the duplicate in 1999[1].
As you can see from their commit[1], there is another duplicate
which has been removed from that file - "readnews". There, they
have removed it from:
netnews 532/tcp
and, even nowadays, still have it as a local alias[2]:
readnews 119/tcp untp
on top of the usual[2]:
nntp 119/tcp # Network News Transfer
nntp 119/udp # Network News Transfer
while IANA entries look as follows[3]:
nntp 119 tcp Network News Transfer
nntp 119 udp Network News Transfer
netnews 532 tcp readnews
netnews 532 udp readnews
FreeBSD[4] and DragonFly BSD[5]:
nntp 119/tcp usenet #Network News Transfer Protocol
nntp 119/udp usenet #Network News Transfer Protocol
netnews 532/tcp readnews
netnews 532/udp readnews
To sum it up, I wasn't sure whether to remove it from:
nntp 119/tcp readnews untp
or:
netnews 532/tcp readnews
Perhaps add "usenet" alias to the "nntp" entry while there...?
Either way, I'm leaving it "as is", at least for now.
In terms of the actual diff, I've also taken the liberty to update
the comment to the more modern/familiar - "Domain Name Server" -
as, nowadays, it is being used universally[2][3][4][5].
[0] https://cvsweb.openbsd.org/~checkout~/src/etc/services?rev=1.1
[1]
http://cvsweb.netbsd.org/bsdweb.cgi/src/etc/services.diff?r1=1.30&r2=1.31&only_with_tag=MAIN&f=h
[2] http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/etc/services?rev=1.103
[3]
https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt
[4] https://cgit.freebsd.org/src/plain/usr.sbin/services_mkdb/services
[5] https://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/etc/services
Regards,
Raf
Index: etc/services
===================================================================
RCS file: /cvs/src/etc/services,v
retrieving revision 1.102
diff -u -p -r1.102 services
--- etc/services 12 May 2021 06:50:33 -0000 1.102
+++ etc/services 16 May 2021 17:46:38 -0000
@@ -33,8 +33,8 @@ nameserver 42/tcp name # IEN 116
whois 43/tcp nicname
tacacs 49/tcp tacas+ # Login Host Protocol (TACACS)
tacacs 49/udp tacas+ # Login Host Protocol (TACACS)
-domain 53/tcp nameserver # name-domain server
-domain 53/udp nameserver
+domain 53/tcp # Domain Name Server
+domain 53/udp # Domain Name Server
mtp 57/tcp # deprecated
bootps 67/tcp # BOOTP server
bootps 67/udp
