Unable to access any private IP (Cisco Anyconnect VPN) from WSL2 only

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### Windows Version

10.0.26100.7171

### WSL Version

2.6.1.0

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

- [x] WSL 2
- [ ] WSL 1

### Kernel Version

6.6.87.2-1

### Distro Version

Ubuntu 20.04

### Other Software

_No response_

### Repro Steps

1. start Cisco Anyconnect VPN on Windows
2. launch WSL2 ( networking mode set to mirrored in .wslconfig file)
3. From WSL2, ping any private IP address of the VPN, It does not work:
> dev@pc1:~$ ping -c 4 192.168.222.75
> PING 192.168.222.75 (192.168.222.75) 56(84) bytes of data.
> From 192.168.119.224 icmp_seq=1 Destination Host Unreachable
> From 192.168.119.224 icmp_seq=2 Destination Host Unreachable
> From 192.168.119.224 icmp_seq=3 Destination Host Unreachable
> From 192.168.119.224 icmp_seq=4 Destination Host Unreachable
> --- 192.168.222.75 ping statistics ---
> 4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3129ms
> pipe 3
> dev@pc1:~$

4. pinging same private IP from windows terminal works!
> PS C:\Users> ping 192.168.222.75
> Pinging 192.168.222.75 with 32 bytes of data:
> Reply from 192.168.222.75: bytes=32 time=21ms TTL=63
> Reply from 192.168.222.75: bytes=32 time=16ms TTL=63
> Reply from 192.168.222.75: bytes=32 time=21ms TTL=63
> Reply from 192.168.222.75: bytes=32 time=14ms TTL=63

### Expected Behavior

pinging private VPN IP should have worked on WSL2.
Note: There was no issue before, i.e. it used to work before the latest Windows11 Update

### Actual Behavior

pinging private VPN IP not working on WSL2 only

### Diagnostic Logs

_No response_

No source file or test is named. Reproduce with WSL2 in mirrored networking mode, Cisco AnyConnect active, and a ping to a private VPN IP; compare the WSL2 result with Windows and verify that private VPN addresses become reachable from WSL2 again.

Written by the indexing model from the issue text.