37 lines
917 B
Groff
37 lines
917 B
Groff
.TH NSLOOKUP 1
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.SH NAME
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nslookup - DNS hostname lookup
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.SH SYNOPSIS
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nslookup <hostname>
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.SH DESCRIPTION
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Resolves a hostname to an IPv4 address using the configured
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DNS server and prints the result.
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The kernel DNS resolver sends a UDP query to port 53 of the
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configured DNS server and waits up to 5 seconds for a reply.
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Results are cached in an 8-entry kernel cache with TTL support.
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.SH OUTPUT
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Server: 10.0.68.1
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Name: example.com
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Address: 93.184.216.34
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Time: 3ms
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If the lookup fails:
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Could not resolve: badhost.invalid
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.SH DNS CONFIGURATION
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The DNS server address is obtained automatically via DHCP.
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It can also be viewed and set with ifconfig. The default
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is 10.0.68.1 (QEMU user-mode networking).
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.SH EXAMPLES
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nslookup google.com
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nslookup icanhazip.com
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.SH SEE ALSO
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ping(1), fetch(1), dhcp(1), ifconfig(1), syscalls(2)
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