DDNS can get updates in the forward direction, but cannot get updates in the reverse direction. If you want to break the header, please help

DDNS can get updates in the forward direction, but cannot get updates in the reverse direction. If you want to break the header, you can help-Linux general technology-Linux technology and application information. The following is a detailed description. [I = s] This post was last edited by crossbitter at, 2011-11-22

CODE: [root @ host named] # cat/etc/dhcpd. conf Ddns-update-style interim; Ignore client-updates; Option domain-name "tcbuu.cn "; Option domain-name-servers 10.22.1.123; Default-lease-time 600; Max-lease-time 800; Ddns-updates on; Subnet 10.22.1.0 netmask 255.255.255.0 { Range 10.22.1.60 10.22.1.69; Option routers 10.22.1.100; } Key myddns { Algorithm HMAC-MD5.SIG-ALG.REG.INT; Secret mTwFaykuyGRDX8Om97ZJ6Q =; } Zone tcbuu.cn .{ Primary 10.22.1.123; Key myddns; } Zone tcbuu.cn. arpa .{ Primary 10.22.1.123; Key myddns; }