Follow-up Comment #1, bug #39710 (project grub):
This patch was sent a while ago to the grub-devel mailing list. This is the
author's explanation:
Adding multiple questions on a single DNS query is not supportted by most
DNS servers. This patch issues two separate DNS queries sequentially for ipv4
and then for ipv6.
There are 4 possible config options:
DNS_OPTION_IPV4: issue only one ipv4 query
DNS_OPTION_IPV6: issue only one ipv6 query
DNS_OPTION_PREFER_IPV4: issue the ipv4 query first and fallback to ipv6
DNS_OPTION_PREFER_IPV6: issue the ipv6 query first and fallback to ipv4
However, there is no code yet to set such config option. The default is
DNS_OPTION_PREFER_IPV4.
I tested against mainstream and worked.
The patch with the changelog:
https://gist.github.com/pfsmorigo/ee115153a00da8e09c48
Can we commit it?
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