WSL2 can't access IPv6 addresses in mirrored mode

### Windows Version

Microsoft Windows [Version 10.0.26100.3194]

### WSL Version

2.4.11.0

### Are you using WSL 1 or WSL 2?

- [x] WSL 2
- [ ] WSL 1

### Kernel Version

5.15.167.4

### Distro Version

Debian 12

### Other Software

_No response_

### Repro Steps

Run WSL2 with the following .wslconfig:

```
[wsl2]
networkingMode=mirrored
```

In Powershell on the Windows side, ping ipv4.google.com and ipv6.google.com.

In WSL2 Debian 12, ping ipv4.google.com and ipv6.google.com.

### Expected Behavior

The IPv4 and IPv6 pings should work on both the PowerShell side and the WSL2 Debian side.

### Actual Behavior

PowerShell:
```
ping ipv4.google.com

Pinging ipv4.l.google.com [142.251.179.100] with 32 bytes of data:
Reply from 142.251.179.100: bytes=32 time=10ms TTL=104
Reply from 142.251.179.100: bytes=32 time=10ms TTL=104
Reply from 142.251.179.100: bytes=32 time=9ms TTL=104
Reply from 142.251.179.100: bytes=32 time=9ms TTL=104

ping ipv6.google.com

Pinging ipv6.l.google.com [2607:f8b0:4004:c1f::8b] with 32 bytes of data:
Reply from 2607:f8b0:4004:c1f::8b: time=8ms
Reply from 2607:f8b0:4004:c1f::8b: time=8ms
Reply from 2607:f8b0:4004:c1f::8b: time=8ms
Reply from 2607:f8b0:4004:c1f::8b: time=8ms
```

WSL2 Debian 12:
```
ping ipv4.google.com
PING ipv4.l.google.com (172.253.62.102) 56(84) bytes of data.
64 bytes from bc-in-f102.1e100.net (172.253.62.102): icmp_seq=1 ttl=57 time=9.16 ms
64 bytes from bc-in-f102.1e100.net (172.253.62.102): icmp_seq=2 ttl=57 time=9.88 ms
64 bytes from bc-in-f102.1e100.net (172.253.62.102): icmp_seq=3 ttl=57 time=9.25 ms
64 bytes from bc-in-f102.1e100.net (172.253.62.102): icmp_seq=5 ttl=57 time=9.81 ms

ping ipv6.google.com
PING ipv6.google.com(pd-in-f139.1e100.net (2607:f8b0:4004:c1f::8b)) 56 data bytes
From 2605:a601:a693:5001:3151:4839:9d23:a8cc icmp_seq=1 Destination unreachable: Address unreachable
From 2605:a601:a693:5001:3151:4839:9d23:a8cc icmp_seq=2 Destination unreachable: Address unreachable
From 2605:a601:a693:5001:3151:4839:9d23:a8cc icmp_seq=3 Destination unreachable: Address unreachable
From 2605:a601:a693:5001:3151:4839:9d23:a8cc icmp_seq=4 Destination unreachable: Address unreachable
```

### Diagnostic Logs

_No response_

Reproduce the issue with WSL 2.4.11.0, Debian 12, kernel 5.15.167.4, and networkingMode=mirrored in .wslconfig. Compare the listed PowerShell and WSL2 ping commands for ipv4.google.com and ipv6.google.com; done means both IPv4 and IPv6 pings work from WSL2 as they do on Windows.

Written by the indexing model from the issue text.