IPv4 and IPv6 Support

Doggo provides support for both IPv4 and IPv6, allowing you to perform DNS queries over either protocol.

Default Behavior

By default, when no query type is specified, Doggo will query for both A (IPv4) and AAAA (IPv6) records. This provides a complete view of all available IP addresses for a domain.

$ doggo mrkaran.dev
NAME            TYPE    CLASS   TTL     ADDRESS                         NAMESERVER
mrkaran.dev.    A       IN      300s    104.21.7.168                    127.0.0.53:53
mrkaran.dev.    A       IN      300s    172.67.187.239                  127.0.0.53:53
mrkaran.dev.    AAAA    IN      300s    2606:4700:3030::ac43:bbef       127.0.0.53:53
mrkaran.dev.    AAAA    IN      300s    2606:4700:3035::6815:7a8        127.0.0.53:53

Querying for Specific IP Versions

You can explicitly request only IPv4 or IPv6 addresses by specifying the record type:

IPv4 Only (A Records)

$ doggo A mrkaran.dev
NAME            TYPE    CLASS   TTL     ADDRESS         NAMESERVER
mrkaran.dev.    A       IN      300s    104.21.7.168    127.0.0.53:53
mrkaran.dev.    A       IN      300s    172.67.187.239  127.0.0.53:53

IPv6 Only (AAAA Records)

$ doggo AAAA mrkaran.dev
NAME            TYPE    CLASS   TTL     ADDRESS                         NAMESERVER
mrkaran.dev.    AAAA    IN      300s    2606:4700:3030::ac43:bbef       127.0.0.53:53
mrkaran.dev.    AAAA    IN      300s    2606:4700:3035::6815:7a8        127.0.0.53:53

Forcing IPv4 or IPv6 Transport

You can force Doggo to use only IPv4 or IPv6 network transport with the -4 and -6 flags. These flags control both the query type and which nameservers are used:

IPv4 Only

The -4 flag forces IPv4 transport and filters system nameservers to use only IPv4 addresses:

$ doggo -4 mrkaran.dev
# Queries only A records and uses only IPv4 nameservers from /etc/resolv.conf

IPv6 Only

The -6 flag forces IPv6 transport and filters system nameservers to use only IPv6 addresses:

$ doggo -6 mrkaran.dev
# Queries only AAAA records and uses only IPv6 nameservers from /etc/resolv.conf

Nameserver Filtering

When using -4 or -6, Doggo automatically filters system nameservers from /etc/resolv.conf (or Windows DNS settings) to match the requested IP version. This prevents errors like “no suitable address found” when your system has both IPv4 and IPv6 nameservers configured.

Using IPv6 Nameservers

Doggo supports IPv6 nameservers and accepts them in multiple formats for convenience:

With Brackets (Standard Format)

$ doggo mrkaran.dev @[2606:4700:4700::1111]

Without Brackets (dig-compatible)

For compatibility with dig, you can omit the brackets:

$ doggo mrkaran.dev @2606:4700:4700::1111

Link-Local Addresses with Zone Identifier

You can use link-local IPv6 addresses with zone identifiers:

$ doggo mrkaran.dev @fe80::1%eth0

With Protocols

IPv6 addresses work with all supported protocols:

# DNS over TLS
$ doggo mrkaran.dev @tls://[2606:4700:4700::1111]:853

# DNS over HTTPS
$ doggo mrkaran.dev @https://dns.google/dns-query

# DNS over QUIC
$ doggo mrkaran.dev @quic://dns.adguard-dns.com:853