create better error code for Network Create

Description

E1220 00:11:50.956661   28743 start.go:99] Unable to get host IP: network inspect: error parsing network inspect output: "{\"Name\": \"minikube\",\"Driver\": \"bridge\",\"Subnet\": \"192.168.49.0/24\",\"Gateway\": \"192.168.49.1\",\"MTU\": , \"ContainerIPs\": [\"192.168.49.2/24\"]}\n"

X Exiting due to GUEST_START: Failed to setup kubeconfig: network inspect: error parsing network inspect output: "{\"Name\": \"minikube\",\"Driver\": \"bridge\",\"Subnet\": \"192.168.49.0/24\",\"Gateway\": \"192.168.49.1\",\"MTU\": , \"ContainerIPs\": [\"192.168.49.2/24\"]}\n"
* 
* If the above advice does not help, please let us know: 
  - https://github.com/kubernetes/minikube/issues/new/choose

Contributor guide

Tech stack

godocker

Domain

devopsinfrastructure

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

Go programmingminikube workflownetwork inspect command

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

60

Research direction

The error occurs when parsing network inspect output in the minikube start process. The relevant code is likely in the minikube networking package, possibly in pkg/minikube/network or similar. To improve the error code, one should examine where the network inspect output is parsed and how errors are handled, then add a more descriptive error message that includes the specific parsing failure. The issue references #9811 for context. A good first step would be to locate the parsing function and understand the expected JSON format.