Update man pages for slurmdbd.conf and slurm.conf with EnableIPv6 option.

Bug 8350

doc/man/man5/slurm.conf.5

@@ -476,6 +476,17 @@ Used to directly bind to the address of what the node resolves to instead
 of binding messages to any address on the node which is the default.
 This option is for all daemons/clients except for the slurmctld.
 .RE
+.TP
+\fBEnableIPv6\fR
+Enable using IPv6 addresses for all slurm daemons (except slurmdbd). When
+using both IPv4 and IPv6, address family preferences will be based on your
+/etc/gai.conf file.
+.RE
+.TP
+\fBDisableIPv4\fR
+Disable IPv4 only operation for all slurm daemons (except slurmdbd).
+.RE
+
 
 .TP
 \fBCompleteWait\fR

doc/man/man5/slurmdbd.conf.5

-.TH "slurmdbd.conf" "5" "Slurm Configuration File" "September 2020" "Slurm Configuration File"
+.TH "slurmdbd.conf" "5" "Slurm Configuration File" "October 2020" "Slurm Configuration File"
 
 .SH "NAME"
 slurmdbd.conf \- Slurm Database Daemon (SlurmDBD) configuration file
@@ -163,6 +163,16 @@ present.
 .TP
 \fBCommunicationParameters\fR
 Comma separated options identifying communication options.
+.RS
+.TP 15
+\fBEnableIPv6\fR
+Enable using IPv6 addresses for the slurmdbd. When using both IPv4 and IPv6,
+address family preferences will be based on your /etc/gai.conf file.
+.RE
+.TP
+\fBDisableIPv4\fR
+Disable IPv4 only operation for the slurmdbd.
+.RE
 
 .TP
 \fBDbdBackupHost\fR