| U
- UDP protocol
- description
,  - displaying statistics
,  - services in /etc/inet/services file
,  - UDP packet process
, 
- unicast addresses
,  - aggregate global
,  - format prefix
, 
- unicast datagram routing, Mobile IP
, 
- UNIX "r" commands
, 
- /usr/sbin/in.rdisc program
- description
,  - dynamic routing selection and
,  - logging actions
,  - turning off RDISC
, , 
- /usr/sbin/in.routed daemon
- description
,  - logging actions
,  - space-saving mode
, , 
- /usr/sbin/inetd daemon
- checking if running
,  - services started by
, 
- /usr/sbin/ping command
, ,  - description
,  - running
, ,  - syntax
, , 
V
- -V option
- snoop command
, 
- /var/inet/ndpd_state.interface file
, 
- Version label
, 
- Version label
, 
- Version label, General section
, 
- virtual private networks (VPN)
,  - setting up
, 
- visitor list
- foreign agent
,  - Mobile IP
, 
W
- Web server
- securing with IPsec
, 
- wide area network (WAN)
- Internet
- domain name registration
, 
- wildcards in bootparams database
, 
- wireless communications
- Mobile IP
, , , 
Z
- zone file
, 
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