Solution : https://service.sap.com/sap/support/notes/1173528 (SAP Service marketplace login required)
Key words :
full qualified host names, short host names, suddenly reject definitions, smgw fqh reason, host=hostsap1, kernel patch, files sec_info, gw/reg_info, registered programs, gw/resolve_phys_addr
Related Notes :
1305851 | Overview note: reg_info and sec_info |
1280641 | reginfo, secinfo: Changing #VERSION=2 does not work |