iv
Configuring an interface to use BOOTP for IP address acquisition·········································································· 80
Displaying and maintaining BOOTP client ················································································································· 80
BOOTP client configuration example ·························································································································· 80
Network requirements ··········································································································································· 80
Configuration procedure ······································································································································ 80
Configuring DNS ······················································································································································· 81
Overview ········································································································································································· 81
Static domain name resolution ····························································································································· 81
Dynamic domain name resolution ······················································································································· 81
DNS proxy ····························································································································································· 82
DNS spoofing ························································································································································ 83
DNS configuration task list ············································································································································ 84
Configuring the IPv4 DNS client ·································································································································· 85
Configuring static domain name resolution ········································································································ 85
Configuring dynamic domain name resolution ·································································································· 85
Configuring the IPv6 DNS client ·································································································································· 86
Configuring static domain name resolution ········································································································ 86
Configuring dynamic domain name resolution ·································································································· 87
Configuring the DNS proxy ·········································································································································· 87
Configuring DNS spoofing ··········································································································································· 88
Specifying the source interface for DNS packets ······································································································· 88
Configuring the DNS trusted interface ························································································································· 89
Setting the DSCP value for outgoing DNS packets ···································································································· 89
Displaying and maintaining IPv4 DNS ························································································································ 90
IPv4 DNS configuration examples ······························································································································· 90
Static domain name resolution configuration example ····················································································· 90
Dynamic domain name resolution configuration example ··············································································· 91
DNS proxy configuration example ······················································································································ 93
IPv6 DNS configuration examples ······························································································································· 95
Static domain name resolution configuration example ····················································································· 95
Dynamic domain name resolution configuration example ··············································································· 96
DNS proxy configuration example ···················································································································· 100
Troubleshooting IPv4 DNS configuration ·················································································································· 101
Symptom ······························································································································································· 101
Solution ································································································································································· 101
Troubleshooting IPv6 DNS configuration ·················································································································· 101
Symptom ······························································································································································· 101
Solution ································································································································································· 101
Configuring DDNS ·················································································································································· 102
Overview ······································································································································································· 102
DDNS application ··············································································································································· 102
DDNS client configuration task list ····························································································································· 103
Configuring a DDNS policy ········································································································································ 103
Configuration prerequisites ································································································································ 105
Configuration procedure ···································································································································· 105
Applying the DDNS policy to an interface ················································································································ 105
Setting the DSCP value for outgoing DDNS packets································································································ 106
Displaying DDNS ························································································································································· 106
DDNS configuration examples ··································································································································· 107
DDNS configuration example with www.3322.org ······················································································· 107
DDNS configuration example with PeanutHull server ····················································································· 108
Basic IP forwarding on the device ························································································································· 110
FIB table ········································································································································································ 110
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