SSL cert does not work with IP address for SAN

You're using the wrong SAN type – only actual domain names are allowed in "DNS" type SANs; for IP addresses there is the "iPAddress" type ([7] OCTET STRING).

For OpenSSL you can use:

subjectAltName=IP:192.168.1.50

subjectAltName=IP:2001:db8:1234::4567

You have to add your IP Address to SAN. This code working for me. Add your IP Address like this.

[alternate_names]
IP.1 = 127.0.0.1