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DrDoof
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A small resolver for IPv4 address records, so that clients such as NTP can be given a host name: "dns server <ip> [<ip>]", "dns lookup <name>" and "dns". Without a configured server it uses the one DHCP handed out. A query goes to the servers in turn every two seconds and gives up after six tries; answers with compressed names and CNAME records ahead of the address are understood. A name that already is a dotted address is taken without a query. The resolver sits in BANK3, the command line in BANK2 next to the helpers it uses. The System page shows and sets the servers.
20 lines
761 B
Markdown
20 lines
761 B
Markdown
# DNS
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The switch can resolve host names to IPv4 addresses, for the NTP client and
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for anything else that is given a name instead of an address.
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```
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dns server <ip> [<ip>] # one or two servers, 0.0.0.0 removes them
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dns lookup <name> # resolve a name and print the address
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dns # show the servers
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```
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Without a configured server the resolver uses the one handed out by DHCP.
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Only address records are looked up; a query goes to the servers in turn,
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every two seconds, and gives up after six tries. A name that already is a
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dotted address is taken as it is, without a query.
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The DNS servers are set in the Network card of the System page as well.
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Settings made there or on the console are kept only once the configuration is
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saved.
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