# ARP: no ARP reply received for 192.168.1.50 on eth0

- **ID:** `networking/arp-request-no-reply`
- **Domain:** networking
- **Category:** network_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

The host sent an ARP request for a target IP address but received no reply, indicating the target is unreachable, powered off, or on a different VLAN/subnet.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Linux kernel 6.1 | active | — | — |
| Windows 11 22H2 | active | — | — |
| macOS Ventura 13.4 | active | — | — |

## Workarounds

1. **Verify target reachability: ping -c 3 192.168.1.50** (90% success)
   ```
   Verify target reachability: ping -c 3 192.168.1.50
   ```
2. **Check ARP table and manually add entry if needed: arp -s 192.168.1.50 00:11:22:33:44:55** (70% success)
   ```
   Check ARP table and manually add entry if needed: arp -s 192.168.1.50 00:11:22:33:44:55
   ```

## Dead Ends

- **** — Flushing the ARP cache (arp -d 192.168.1.50) without addressing the underlying connectivity issue only temporarily removes the entry. (85% fail)
- **** — Assuming the target is down and rebooting the local machine wastes time if the issue is a VLAN mismatch. (90% fail)