add support 4g -- >ppp

hc

2023-11-24 2b26ab132d1b33b91c84c6d732456200e8c5ee77

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# Locally computed:
sha256  07267a3951038ee2e02d26cc41bf8e275668c38f751240d3e78dc979182e7376  libjson_7.6.1.zip