Question about ip resolution

[EvanCarroll]

From my question here, https://unix.stackexchange.com/q/761965/3285

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I have two commands, one of them with

# RESOLVES TO IPV6
podman run --network=host ...

And one of them,

# RESOLVES TO IPV4
podman run --network=slirp4netns ...

Is there anyway to ensure both of these resolve to the same address? For some reason the ipv6 resolution isn't blacklisted, the ipv4 resolution is blacklisted.

This can be confirmed if I specify wget -4 and wget -6. I find that for both with -6 the requests work and come back with a response; the -4 returns HTTP 403 Forbidden -- it's blacklisted. That tells me this is predominately a resolver problem however if I run,

podman run -ti --network=slirp4netns alpine:3 nslookup rr4.sn-q4flrnsk.googlevideo.com.
podman run -ti --network=host alpine:3 nslookup rr4.sn-q4flrnsk.googlevideo.com.

The non-authoritative answers that come back are the same.

Non-authoritative answer:
Name:	rr4.sn-q4flrnsk.googlevideo.com
Address: 2607:f8b0:4000:4::9

Non-authoritative answer:
Name:	rr4.sn-q4flrnsk.googlevideo.com
Address: 173.194.24.137

But if I run,

podman run -ti --network=slirp4netns alpine:3 ping -w1 rr4.sn-q4flrnsk.googlevideo.com.
podman run -ti --network=host alpine:3 ping -w1 rr4.sn-q4flrnsk.googlevideo.com.

I can again see that the slirp4netns chooses ipv4 and host chooses ipv6,

$ podman run -ti --network=slirp4netns alpine:3 ping -w1 rr4.sn-q4flrnsk.googlevideo.com.

PING rr4.sn-q4flrnsk.googlevideo.com. (173.194.24.137): 56 data bytes

$ podman run -ti --network=host alpine:3 ping -w1 rr4.sn-q4flrnsk.googlevideo.com.

PING rr4.sn-q4flrnsk.googlevideo.com. (2607:f8b0:4000:4::9): 56 data bytes

Help this make sense to me, why does --network=host resolve to ipv6 by default and not --network=slirp4netns?